Auxiliary presser for flat knitting machines



w. HEINITZ 2,085,656

AUXILIARY PRESSER FOR FLAT KNITTING MACHINES June 29, 1937.

Filed July 24, 1956 50 that alteration of the number of the needles,

g Patented June 29, 1937 A XILIARY DRESSER FOR FLAT KNITTING MACHINESWaldemar Heinitz, Chemnitz, Germany, assignor to Schubert & SalzerMaschinenfabrik Aktiengesellschaft, Chemnitz, G

Application July 24. 1936, Serial N 92,446 .In Germany November 5, 19351 Claim. (01. (ac-9s) The present invention relates to'an auxiliary Theauxiliary pressers which in a well known presser for flat knittingmachines. 'manner'are provided in the width .of the heel For themanufacture of stockings ina single. portions at both sides in eachdivision are, dur-' operation on net knitting machines, the latter ingnormal operation of the knitting machine, are provided with auxiliarypressers; Th'es'e auxplacedbelow the common presser, so that, in 8. chof which manner known in the art, all frame needles may be pressed. Forthe manufacture of the heel portions, the two auxiliary pressers arelifted in a well known manner and brought in front of the presser edge.Simultaneously with this shifting of the auxiliary pressers, themovement of the frame needle bar is changed, so that the frame needlesmay be pressed by these lifted auxiliary pressers only, whereas theframe needles, lyingv b to produce the instep portion of the stocking,are not pressed for want of a suitable pressing basis. In theaccompanying drawing an auxiliary presser according to the inventionisshown by way of example.

In this drawing: Fig. 1 is a broken away front NToF -uc be actuated bythem. The frame needles, serving to produce the instep portion of thestocking, are. placed in suspense during the manufacture of the heelportions, so-that at this placeof the division an auxiliary presser isnot required.

Auxiliary pressers are known in the art which at both sides of eachdivision of the knitting mawidth necessary for the elevation of adivision of a knitting machine showing the device for adjustingthe twoauxiliarymressers,

Fig. 2 shows a side elevation partly in section of the auxiliary presserillustrating also the means for lifting same,

- Fig. 3 is a part sectional side elevation similar to Fig; 2 showingthe individual parts in another position,

Figs. 4 and 5 illustrate sections on the lines 4-1 in Fig. 6 and 5-5 inFig; 7 respectively, showing the guide arms of the auxiliary pressers intwo differentoperating positions,

Figs. 6 and 7 are detail plan views, and

Figs. 8 and!) show detail views of the supports carrying the auxiliarypress instruments.

The jack sinker hearing I, carrying in a well known manner the jacksinkers 2, is provided 'with the usual presser edge 3 and it is obvious,an adjustment does not only require a rather long time, but may easilybe a source of faults. Furthermore, a selecting device for individuallymovable press instruments has already become known which also allows theinstep portion ments arranged in the middle portion of each 5 divisionare lifted in the width in which the frame needles, adapted to knit theinstep portion of the stocking,v are to be placed insuspense, so

with which the rather difficult and complicated and, frame ne dles 4 maycooperate. moreover, the'man'ufacture of this construction I Mountedupon a shaft 5, rotatably journalled "r q ir v ly hi h costs. The use ofthis in the frame of the knitting machine not shown device also does notexclude faults. in the drawing, are lever arms 6 which are dis- Allthese drawbacks f a s ments, causing tributed all over the length of theknitting maloss of'timeand tending to introduce faults, are chine andcarry guide arms 1. In these guide obviated by the auxiliary presserforming the arms 1 two bars 8 and 9, also extending all over Moreover,the

the length of the knitting machine, are mounted great advantage.

which are adapted to be shifted in the longitudinal direction.

novel auxiliary presser has the adapted to produce the instep portionand to be of the machine a support ll, carrying press inplaced insuspense, may. from a single place and struments I, is fixed to the barI by'screws I 2 in a very simple manner, he eflected uniformly and I:(Fig. 8 while a support ll, carrying andsimultaneously at any desirednumber of dipress instruments I5 is fixed to the bar 8 by 5 visions.

etween the tWO auxiliary pressers and serving 8 and 9 is formed as atoothed rack l8 and I9 respectively and a toothed wheel 20 mounted on abolt 2| permanently engages with both racks I8 and IS. The ends of thebolt 2| are rotatably 5 mounted in bearing plates 22 provided at bothsides of the bars 8 and 3 and one of which only may be seen in Fig. 1,as the other is hidden by same. Both bearing plates 22 are connectedtogether by pins 23 and 24 extending through 10 slots 25 and 25respectively formed in the bars 8 and 9 respectively. Fixed upon the hub21 of the toothed wheel 28 is a hand lever 28. bar 8 carries a pointer29 adapted to be moved across a scale 30 fixed on the frame of the 15knitting machine not shown in the drawing.

The upper end of each guide arm 1 is formed as a pin 3|. An auxiliarybar 32 which may longitudinally be shifted in the frame of the knittingmachine, for instance by the well known patterning device not shown .inthe drawing,

carries projections 33 each provided with an inclined surface 34. In therange of each guide arm I a projection 33 is provided at the bar 32. Thepins 3| are pressed against the auxiliary 25 bar 32 by means of tensionsprings 35 the ends of which are connected to the associated guide arm 1and the hub of the corresponding lever arm 6 respectively.

Mounted upon the shaft is a lever 36 the free 30 end of which is forkedand carries a roller 31 adapted to be shifted on its bolt 38 by means ofa fork 39 one prong of which only is diagrammatically shown in -.Fig. 2.A tension spring 40, connected to the lever 36 and a fixed portion of 35the machine frame, permanently tends to draw the roller 31 against acircular disc 4| or a cam 42 fixed on the cam shaft 43, depending on theposition of the fork 39. Each guide arm carries a projection 44 havingan inclined surface 45. Corresponding counter-projections 46 pro- .videdwith an inclined surface 41 are fixed to the jack sinker bearing Theoperation of the new device is as follows:

During the manufacture of ordinary rows of loops the roller 31 carriedby the lever 36 runs on the circular disc 4| fixed upon the cam shaft 43at one side of the cam 42. During this operation, the press instrumentsI, I5 occupy the position shown in Fig. 2, that is to say, they liebelow the presser edge 3 of the jack sinker bearing l. The inclinedsurfaces 45 of the projections 44 bear against the inclined surfaces 41of the counter-projections 4B. The frame needles 4 are pressed directlyat the presser edge 3.

An alteration of the position of the supports |8 and I4 carrying theauxiliary press instruments II and I5 is effected in the followingmanner:

If the auxiliary bar 32 is shifted to the right inFig. 1, the inclinedsurfaces 34 of the projections 33 are passed along the pins 3| of theguide arms 1 (Fig. 6) which thereby come into engagement with theprojections 33 as shown in Fig. '7. The guide arms 1 together with thebars 8, 9 and the supports l8 and I4 for the press instruments H and |5vrespectively are oscillated. Hereby the press instruments H and I5 aremoved out of the range of the knocking over comb 48, so that a lateraldisplacement of the instruments II and I5 may be effected.

By oscillating the lever 28 the bars 8 and 9 The carrying the supportsl0 and I4 for the auxiliary press instruments II and I5 respectively maybe adjusted by means of the toothed wheel 20 engaging the racks l8 andI9 at the ends of the bars 8 and 9 respectively. Hereby an alteration ofthe width of the instep portion, lying between the two auxiliarypressers, is effected. The pointer 23 indicates upon the scale 38 theadjustment made, so that the adjustment may be made in'such a manner,that the number bf frame needles 4, required to knit the instep portion,may be placed in suspense.

After adjustment by the lever 28, the auxiliary bar 32 is returnedagain, so that the auxiliary pressers, under the action of the springs35, occupy again their original position shown in Fig. 2 By shifting theroller 31 into the path of the cam 42, the auxiliary pressers may belifted in a manner known in the art. By the cooperation of the inclinedsurfaces 45 and 41, the guide arms 1 are moved away from the jack sinkerhearing I, so that the heads of the auxiliary press instruments I I andI5 are placed in front of the presser edge 3 and, therefore, the frameneedles are pressed by the auxiliary pressers.

'As auxiliary pressers for any desired number of divisions of a knittingmachine are carried by the bars 8 and 9, all auxiliary pressers may beso adjusted, that the same number of frame needles 4, adapted to knitthe instep portion of a stocking, is uniformly and simultaneously placedin suspense at all divisions.

What I claim is:

An auxiliary presser for flat knitting machines, comprising incombination a jack sinker bearing, a cam shaft arranged below saidbearing, a circular disc and a cam fixed on said cam shaft, a shaft alsoarranged below said bearing and extending in parallel to said cam shaft,a spring actuated lever fixed on said shaft, a roller adjustably carriedby said spring actuated lever, a slidably arranged fork engaging saidroller and adapted to bring said roller in the path of said circulardisc and said cam respectively, a plurality of levers also fixed on saidshaft, guide arms pivoted to the free ends of said levers, tensionsprings urging said guide arms towards said shaft, :3. projection havingan inclined surface at each of said guide arms, counter-projectionshaving an inclined surface provided at said jack sinker bearing, oneopposite each of said projections on said guide arms, an auxiliary barshiftably arranged in front of said jack sinker bearing, a projectionhaving an inclined surface provided at said auxiliary bar opposite eachof said guide arms, a pin-like member formed at the free end of eachguide arm, said pin-like members bearing against said auxiliary bar andadapted to be shifted by the inclined surfaces of said projectionsonsaid auxiliary bar, two bars shiftably mounted in said guide arms, arack formed at one end of each of said bars, a toothed wheel engagingboth racks at said bars, a frame carrying said toothed wheel, pins fixedto said frame and extending through elongated slots in said racks, ahand lever fixed to the hub of said toothed wheel, a pointer fixed toone of said racks and cooperating with a scale to indicate the positionof said bars, supports fixed to said bars, one on each bar in eachdivision, and auxiliary press instruments carried by said supports.

I WOLDEMAR HEINITZ.

